title: Incidence of endodontic implantitis and implant endodontitis occurring with single-tooth implants: a retrospective study.
abstract: The purposes of this study were to determine success and survival rates for implants and teeth adjacent to implants and the incidence of endodontic implantitis (E-I) (endodontic involvement in adjacent teeth causing implant failure) and implant endodontitis (I-E) (implant placement causing endodontic failure). The data were from 233 single-tooth implants placed in 116 subjects by postgraduate periodontal students with recall radiographs taken >or=9 months after implant placement. Three groups were analyzed: group A, implants with no adjacent teeth (n = 90); group B, implants with nonendodontically treated adjacent teeth (n = 123); and group C, implants with endodontically treated adjacent teeth (n = 20). The success and survival rates for implants were both 92.2% in group A, 98.4% and 99.2% for group B, and 85% and 95% for group C, respectively. For adjacent teeth, they were both 99.4% in group B compared with 75% and 90% in group C. However, after case review, none of the implants or adjacent teeth in group B were considered to have E-I or I-E, and one (5%) of the implants in group C had E-I and two (10%) of the adjacent teeth may have had I-E. The results of the present study agree with previous research, which suggests that endodontically treated teeth adjacent to single-tooth implants are usually successful and should be maintained.
authors.affiliation: Private Practice, Joplin, MO.
authors.forename: Bradley S
authors.initials: BS
authors.lastname: Laird
authors.affiliation: Department of Endodontics, University of Nebraska, Lincoln, NE.
authors.forename: Michael S
authors.initials: MS
authors.lastname: Hermsen
authors.affiliation: Department of Endodontics, University of Nebraska, Lincoln, NE. Electronic address: TGound@UNMC.edu.
authors.forename: Tom G
authors.initials: TG
authors.lastname: Gound
authors.affiliation: Department of Endodontics, University of Nebraska, Lincoln, NE.
authors.forename: Fahd
authors.initials: F
authors.lastname: Al Salleeh
authors.affiliation: Department of Endodontics, University of Nebraska, Lincoln, NE.
authors.forename: Matthew R
authors.initials: MR
authors.lastname: Byarlay
authors.affiliation: Department of Periodontics, University of Nebraska, Lincoln, NE.
authors.forename: Merlyn
authors.initials: M
authors.lastname: Vogt
authors.affiliation: Department of Statistics, University of Nebraska, Lincoln, NE.
authors.forename: David B
authors.initials: DB
authors.lastname: Marx
mesh_terms: D015331:Cohort Studies; D019250:Dental Implants, Single-Tooth / Q000009:adverse effects*; D019232:Dental Restoration Failure; D006801:Humans; D010485:Periapical Periodontitis / Q000150:complications*; D010518:Periodontitis / Q000150:complications*; D012189:Retrospective Studies; D019553:Tooth, Nonvital / Q000150:complications*